More work

Hyperbar.Windows/ConfigurationChangedHandler.cs

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+using Hyperbar.Controls.Windows;
+
+namespace Hyperbar.Windows;
+
+public class AppConfigurationChangedHandler(DesktopApplicationBar desktopFlyout,
+    AppConfiguration configuration) :
+    INotificationHandler<Changed<AppConfiguration>>
+{
+    public Task Handle(Changed<AppConfiguration> notification, CancellationToken cancellationToken)
+    {
+        desktopFlyout.Placement = configuration.Placement;
+        return Task.CompletedTask;
+    }
+}